The influence of triterpenoid saponins on subcellular morphological changes in the cells of parasitic nematodes remains poorly understood. Our study examines the effect of oleanolic acid glucuronides from marigold () on the possible modification of immunogenic proteins from infective larvae (L3). Our findings indicate that the triterpenoid saponins alter the subcellular morphology of the larvae and prevent recognition of nematode-specific proteins by rabbit immune-IgG.
View Article and Find Full Text PDFAvena sativa L., 1753 (Poaceae) is used as feed for livestock and as a crop rotation agent. The purpose of the study was to examine the molecular mechanisms behind the antihelminth activity of the oat saponins avenacoside B (AveB) and 26-desglucoavenacoside B (26DGAveB) by evaluating their effect on Heligmosomoides bakeri, a parasitic nematode of mice.
View Article and Find Full Text PDFSaponins of marigold (Calendula officinalis), in particular derivatives of 3-O-monoglucuronide of oleanolic acid, are able to reduce infectivity of Heligmosomoides polygyrus in mice. The purpose of this study was to understand the immune activation provoked by third-stage larvae exposed to marigold glucuronides. We also examined the pattern of glycosylation of larval antigens which appeared to be crucial for induction of cytokine production in BALB/c mice; higher concentrations of IL-6, IFN-γ, IL-10 and TNF-α were observed in serum or intestine one week post infection.
View Article and Find Full Text PDFPrimary exposure of mice to the nematode Heligmosomoides polygyrus infection reduces inflammation in an experimental model of colitis. The aim of the present investigation was to evaluate whether the reduced inflammation provoked by H. polygyrus L4 larvae in BALB/c mice treated with dextran sulphate sodium is associated with changed expression of opioids in the small intestine and colon.
View Article and Find Full Text PDF